hello i was wondering if anyone has ever built a crcakerbox from the plans on the site microhydros.com
i built one and it turned out relyy good except for one thing thats the drive line i used a stock 540 and i no that is too big but i had it laying around so i thouught wt the heck and well it vibrates to peices i tryed a new coupler and everything i dont want to go with a wire drive do u guys think that i should go with the 480 motor that is supost to be in it ?

If you want more power and speed, I would say go with brushless. I put a Mamba in my Kyosho Half 8 Mini Inferno and it was smaller than the stock motor and like 5 times as fast. You just need one of the brushless boat guys to reccomend a good system for you.

al rite thanks but i now how fast the boat goes and it is a good sped i ned the vidrating to stop thanks

go on ebay ... and search this exact brushless/esc

youll find a good system for 70 shipped to your door

Without pics no one can tell you exactly why your driveline is vibrating, but I'm guessing it's because of lack of support. Make sure the stuffing tube is epoxied in good. For the rest of your stuffing tube that in inside your hull, cut a piece of fiberglass cloth and drape it over it, allowing the ends to run accoss the inside of your hull. Then either use a thin layer of epoxy to soak into the cloth, or use thin CA and the cloth will wick it up. What ever one you do, when it dries it will be very stiff and should eliminate the driveshaft vibrations.

It would also be a good idea to do the same with your motor mount.

ok i will try to get some pics and post them for u guys than for the advise i did that i filled the souronding stiffing tubs with gorillia glue and that stuff is strong

these are the pics if you need more just ask LOL

Part of the problem if not all of it could be from lack of support of your propshaft. If the shaft is even slightly bent, that can throw things off and give you a bunch of vibration.

With the way your hull is cracked around the stuffing tube outside of your hull, I'd say Ron might be on to something.....

GRK65: Not to hijack the thread, just a quick quesiton: Which Mamba did you use in your Half8? Do you have to upgrade anything else to be reliable?

I took castle creations suggestion and used the 5400kv, they said anything higher than that would burn up because the Half 8 is too heavy. I posted this to let this also be a lesson to everyone else thinking about using a Mamba in their boat. Boats require more torque, the Mamba's are meant for small applications. and if you put one in a micro boat make sure you use the 5400kv or less. My half 8 runs fast and smooth, the only other 2 upgrades are oil filled shocks and 8 cell battery. I would say it is 3 times faster than stock.
For the sake of Eyekandy's thread, for anymore info on my half 8 please email or pm me.
PS The Kyosho Half 8 Mini Inferno is very cool and the hardware is true to Kyosho's quality. Very nice right down to the last detail.

thanks gusys i also think the problem is also the motor it might have to much rpm and i think i will order a flex shaft i think i will benifit from it do you think so?

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